I have a Windows Vista x64 appliance that I am trying to import into the Open Source Edition of VirtualBox on Linux Mint 11 x86-64. The ovf file is 21.3 GB in size.

The problem I am having is that every time I attempt to import said appliance, Virtual Box slowly begins to consume all 8 GB of RAM that I have in the system; at which point, the OS locks up. Would limiting the amount of memory the VirtualBox process can use be the best solution?